Means for gauging round chimneys



Oct. 4, 1932. E. LA-RsEN mmms FOR GAUGING ROUND cnnmms Filed July 14, 1930 awvwntoz .E'Zvcr Larsen UNETE TAES lsaazn ELVER LARSEN, F BROOKLYN, EW YORK MEANS FOR GAUGING ROUND CHIMNEYS Application filed July 14, 1930. Serial No. 467,750,

This invention relates to new and useful improvements in gauges for brick layers, and is especially adapted for use in connection .4, with the construction and building of round chimneys.

Heretofore, the laying of bricks and building of chimneys, especially round chimneys, has been a job for highly skilled workmen, incidentally involving a high cost, while at the same time the work of this character. usually proceeded in a slow manner on account of the exactness required, thereby adding further to the expense relative to such undertaking.

' The present invention has for its object to facilitate the laying of bricks in building a round chimney, or in erecting any circular brickwork in a horizontal plane, as well as in building cornices or other ornamental projections upon such chimneys; and it contemplates the provision of means calculated to enable inexperienced workmen to accurately lay bricks, aiding them in gauging in a definite, infallible and easy manner the work under construction, thereby avoiding mistakes and poor workmanship, incidentally permitting of greater speed in the performance of said work. Ordinarily the device is r adjusted once a day for said gauging purpose.

As the construction of this device is comparatively simple the cost ofmanufacturing should be proportionately low.

With the above and other objects in view,

.a this invention consists of the novel features of construction, combination and arrangements of parts, hereinafter fully described, claimed and illustrated in the accompanying drawing forming part of this specification,

and in which similar characters of reference indicate corresponding parts in all views, and in which: s

Figure 1 is an elevational view of my device, as it appears'in actual operation; Figure 2 is an enlarged detail view of the upper end of the pole showing the collar attachment, with a part broken away; Figure 3 is a side elevational detail View of the clutchmember; Figure 4 is a detail sectional View taken on line 4-el of Figure 3; Figure 5 is a further detail view showing the adjustment of the gauging-rod, while Figure 6 illustrates a modification of the actual gauging device shown in Figure 1, and Figure 7 is a detail view ofa clamping attachment for securing the pole in position.

Referring more particularly to the drawing, 10 indicates the masonry of a round chimney under construction. A post or pole, 11, is arranged in the centre of the said chimney and held in exact and proper position by means of the extensible members 12. The said pole Ill is of a preferably round shape in cross section, of an even width, and made of rigid material, preferably steel. The said pole is formed with shallow holes 13 upon its sides, the said holes being arranged, as shown, at short intervals, the holes upon all sides being horizontal in alignment. The pole has mounted at its upper end a slide 14 correspending in shape to the said pole; the said slide having corresponding holes to be aligned with those in the pole for the purposeof securing the said slide to the pole by means of a screw indicated by 15. i A collar '16 is pivotally mounted upon the said slide by means of an annular recess 17 formed upon thclatter. A gauging rod 18 is pivotally engaged to the said collar 16 by means of a bolt 19, as shown in Fig. 1. j

Atan appropriate distance from the top of the pole is mounted another slide 14 with a collar arrangement somewhat similar to the one'just described; however the said latter collaris provided with a projecting rod 20, rigidly secured thereto, screwthreaded, and made to slide freely through an opening 21 formed on the end portion of the said gauging-rod l8; nuts 22 and 2.3 are threaded upon the projecting rod 20 on both sides of the gauging-rod 18 to keep the latter securely in position, once'it has been properly adjustw ed. However, it will be evident that this adustment may be accomplished in difierent ways, adhering to the idea as here disclosed.

The said gauging-rod 18 has a substantially T-shaped form in cross-section, and has atits lower end, a short distance above the projecting rod 20, been provided with a clutch-member 24, capable of sliding up and down upon the said gauging-rod, and engaging the latter H a. sliding manner, as shown in Figure 1, and

in fixed positions by means of notches 25 formed upon the said gauging rod 18.

The said clutch-member 24, comprises, in details, as will be seen in Figure 4, a sliding member 26, adapted to embrace and slide freely upon the T-shaped gauging-rod 18. To the said member 26 is at one side integrally attached an arm 28, the latter being adapted to carry in connection with a cooperating extensible part 29, the actual gauging device 30, as shown in Figure 1. At the opposite side of the said slide are formed integrally therewith four bolts,two upon each side, as indicated by the numerals 31 and 32; the said bolts, which are screwthreaded at their outer ends, have hoods 33 and 34, respectively, mounted thereon, the said hoods bein held securely in place by springs 35, Wlliil in turn are retained by nuts 36.

Upon the sides of the hoods 33 and 34, facing each other, the said hoods are each formed with a shallow depression 37, the said depressions being adapted to receive a bar 38. By moving the said clutch-member 24 up and down according to the work at hand, that isordinarily in an upward direction, as the work to be gauged advances, it will be evident that the said bar 38 of the clutch member 24 will snap into one of the notches 25 upon the gauging-rod 18, thereby fixing the position of the actual gauging device 30, rel-' ative to the work at hand.

The actual gauging device 30 consists of a member 39 that is somewhat curved to allow the bricklayer comparatively free movements in laying the bricks; the point, or plane 40 upon the said curved member 39 indicates the actual plane through which an imaginary line passes in gauging the brickwork of a round chimney when the latter is tapered towards its upper end or battered.

A modification of the device relative to the said curved member is shown in Figure 6. The said modified form may be employed a with advantage when a more narrow chimney is erected.

The curved member 39 is formed integral with the extensible part or arm 29; the said arm members 28 and 29 are interengaged in are rigidly attached together, by a screw 41 after proper adjustment has been made as to the position of the curved member 39 with its guiding point 40.

The said gauging device is equally useful in ascertaining horizontal alignment, as the said device is capable of describing a complete circle when turned upon the supporting pole 11.

The pole 11 is kept erect and in proper po sition in the following manner.

A clamping member 42 is secured to the said pole by means of a screw 43., The said clamping member does not fit snugly upon the said pole, but rather loosely, in order to give hingedly connected and held together by means of a bolt 46 inserted opposite the hinge members, where the said clamping members meet and engage each other in a somewhat dovetailed manner, with their respective endpieces bent into vertical tubes to receive the said bolt.

To the said clamping member 42 are hingedly connected four arm-members 47, the latter cooperating with and interengaging extensible parts 48 the said arm members and their respective extensions being held together by means of screws 49. However, it is obvious that the means of connecting said arm members and the position of these relative to one another may be varied.

The extension-members 48 are at their outer ends provided with tapered flat endpieces 50 adapted to engage between the layers of bricks and thereby support the structure of the device.

The arms 47 are, as formerly described, hingedly connected to the clamping member 42; the said connection being to the efiect that the said arms 47 can fold only in a downward direction. In order, however, to lend further stiffness, as a means of support, to the said structure triangular pieces 51 are arranged integrally upon the said arms 47 in such a manner that the free inner side of the said triangular pieces presses against the clamping member 42, whenever the said arms are in extended position.

It will be observed from Figure 1 that three supporting clamping arrangements have been employed; while this is thought normally to be suflicient, it is clear that for special reasons this number may be varied.

Above the upper clamping arrangement is mounted the usual scaffold 53 for the worker; this scaffold, of course, may be set up in any suitable manner, using the said clamping arrangement as a support therefor. Above the said scaffold at an appropriate height is shown a bracket arrangement 52 adapted for the placement of materials, i. e. mortar and bricks, thereon.

It is evident, that as the work advances it I the form, construction and arrangement of the several parts, as shown, within the scope of the appended claims, without departing,

from the spirit of the invention, and I do not, therefore, limit myself to the construction andarrangement shown and described herein.

What I claim as new, and desire tosecure CEI- ' slidable by Letters Patent of the United States, is:

1. In a device of the class described, a gauging apparatus for use in building round masonary, compri ing a pole adapted to be vertically and centrally arranged relative to the position of the masonry under construction in order to game the portion to be built, a plurality of extensible members mounted upon the said pole and engaging the inner Wall of said masonry whereby to support the pole in position a slide formed with an annular recess d being adjustably mounted upon the said pole, a collar rotatably arranged upon the slide in the said recess, a gauging rod pivotally connected to the said collar, a second slide arranged upon the said pole and havin means for securing the ganging rod in adjusted position, and means arranged upon the said rod for gauging the Work under construction.

2. In a device of the class described, a guiding and gauging apparatus for use in building round chimneys, comprising a structure adapted to be centrally and vertically adjusted relative to the position of a chimney under construction in order to gage the portion thereof to be built, the said structure having a pole, a slide arranged near the top of said pole, a collar turnably mounted upon said slide, a gauging rod pivotally connected to said collar and adapted to assume an oblique position relative to the said pole, means carried by the latter and adapted for adjusting said gauging-rod to fixed positions, means upon said gauging-rod for gauging the Work under construction, and further means for securing the apparatus in a rigid cental position relative to said chimney.

3. In a device of the class described, a guiding and gauging apparatus for use in building round chimneys, comprising a structure adapted to be vertically and centrally adjusted relative to the position of a chimney under construction in order to gage the portion thereof to be built, the said structure having a pole, a slide adjustably arranged near the top of said pole and having an annular recess therearound, a collar turnably mourned upon said slide in the recess formed upon the latter, a gauging-rod pivotally connected to the said collar adjacent one end and having an opening adjacent its other end and adapted to assume an oblique position relative to the said pole, a second slide mounted on said pole at a distance from the former slide and below the latter, a rod projecting, from said second slide and adapted to move freely through the opening formed at the said other end of the said gauging-rod, nuts threaded upon said projecting rod on either side of said gauging-rod for securing the latter rigidly in a fixed position, and means adapted to slide upon said gauging-rod for gauging the Work under construction.

at. In a device of the class described, a

guiding'and gauging apparatus for use in building round chimneys, comprising a structure adapted tobe vertically and centrally adjusted relative to the position of achimney under construction in order to gage the portion thereof to be built, the said structure having a pole, a slide adjustably arranged near the top of said pole and having an annular recess therearound, a collar turnably mounted upon the said slide in said recess formed upon the latter, a gauging-rod pivotally connected to the said collar and adapted to assume an oblique position relative tothe said pole, a clutch-member adapted to move up and down upon said gauging-rod and comprising a slide, an arm integrally connected to one side of said slide and a plurality of threaded bolts integrally connected to the opposite side of said slide, hoods mounted upon said bolts and adapted to engage a bar by means of a depression formed upon each one of the said hood-members, springs for securing said hoods under tension, stop-nuts for arresting said springs and means connected to said slide-arm for gauging the Work under construction.

5. A device of the class described, a guiding and gauging apparatus for use in building round chimneys, comprising a structure adapted to be vertically and centrally adjusted relative to the position of a chimney under construction in order to gage the portion thereof to be built, the said structure having a pole, a slide adjustably arranged near the top of said pole and having a recess formed therearound, a collar turnably mounted upon said. slide by means of said recess, a gauging-rod pivotally connected to the said collar and adapted toassume an oblique position relative to the said pole, a clutchmember adapted to move up and down upon said gauging-rod and comprising a slide, an arm integrally connected to one side of said slide and a plurality of threaded bolts integrally connected to the opposite side of said slide, hoods mounted upon said bolts, springs for securing said hoods under tension, stop.- nuts for arresting said springs, the said hoods having shallow holes arranged upon the surface thereof facing each other and a pin-bar entering the said holes at each end thereof, to hold the slide in adjusted gauging-rod.

6. In a device of the class described, a guiding and gauging apparatus for use in building round chimneys, comprising a structure adapted to be vertically and centrally adj usted relative to the position of a. chimney under construction in order to gage the portion thereof to be built, the said structure having a pole, a slide acljustably arranged near the top of said pole and having a recess formed therearound, a collar turnably arranged upon said slide by means of said recess, a gaugingrod pivotally connected to the said collar and position on the adapted to assume an oblique position relative to the said pole, a clutch-member adapted to move up and down upon said gauging-rod and comprising a slide, an arm integrally connected to one side of said slide, gauging means adjustably connected to said arm and being bent into a curvature and terminating in an indicating point for gauging the work under construction, a plurality of bolts, having threaded end-portions, integrally connected to the opposite side of said slide, hoods mounted upon said bolts, springs securing said hoods under tension, stop-nuts for arresting the said springs, the said hoods having shallow holes arranged upon the surface thereof facing each other, and a pin-bar entering the said holes at each end to hold the slide in adjusted position on the gaugingrod.

7. In a device of the class described, a guiding and gauging apparatus for use in building round chimneys, comprising a structure adapted to be vertically and centrally adjusted relative to the position of a chimney under construction in order to gage the portion thereof to be built, the said structure having a pole, a slide adjustably arranged near the top of said pole and having an annular recess there-around, a collar turnably mounted upon said slide in said recess formed upon the latter, a gauging-rod pivotally connected to the said collar and arranged to assume an oblique position relative to the said pole, a second slide mounted on said pole a distance from the former slide and below the latter, a rod projecting from saidsecond slide and adapted to move freely through the opening formed at the lower end of the said gaugingrod, nuts threaded upon said projecting rod on either side of said gauging-rod for securing the latter rigidly in a fixed position, a plurality of clamping members connected to the lower portion of the said pole, arms pivotally connected to said clamping members, said arms having adjustable extension members slidably attached. thereto, the said extension members terminating in tapered projections adapted to engage betw-een the bricks of a wall.

8. In a device of the class described, a guiding and gauging apparatus for use in building round chimneys, comprising a structure adapted to be vertically and centrally arranged relative to the position of a chimney under construction in order to gage the portion thereof to be built, the said structure having a pole, a slide adj ustably arranged near the top of said pole and having an annular recess therearound, a collar turnably mounted upon the said slide in said recess formed upon the latter, a gaugin g-rod pivotally connected to the said collar adjacent one end and having an opening adjacent its other end, and adapted to assume an oblique posi tion relative to the said pole, a second slide mounted on said pole at a distance from the former slide and below the latter, a rod projecting from said second slide and adapted to move freely through the opening formed at the lower end of the said gauging-rod, nuts threaded upon said projecting rod on either side of said gauging-rod for securing the latter rigidly in a fixed position, a clutchmember, comprising guiding and gauging means, and being adapted to slide upon said gauging-rod, a plurality of clamping members connected to the lower portion of the said pole, arms pivotally connected to said clamping members and adapted to fold in a downward dlrection only, triangular pieces integrally arranged upon the said arms as a means of support, said arms having adjustable extension members slidably attached thereto, the said extension members terminating in tapered projections adapted to engage between the bricks of a wall, substantially as shown and described.

9. In a device of the class described, a guiding and gauging apparatus for use in building round chimneys, comprising a structure adapted to be vertically and centrally adjusted relative to the position of a chimney under construction in order to gage the portion thereof to be built, the said structure having a pole, a slide adjustably arranged near the top of said pole and having a recess formed therearound, a collar turnably mounted upon the said slide by means of said recess, a gauging-rod pivotally con nected to the said collar and adapted to assume an oblique position relative to the said pole, a clutch-member adapted to move up and down upon said gauging-rod, and comprising a slide, an arm integrally connected to one side of said slide, gauging means adjustably connected to said arm and terminating in an angularly shaped, forwardly bent end portion formed with guiding means at its terminal, a plurality of bolts, having threaded end-portions, integrally connected to the opposite side of said slide, hoods mounted upon said bolts, springs securing said hoods under tension, stop nuts for arresting the said springs, the said hoods having shallow holes arranged upon the surfaces thereof facing each other, and a pin-bar entering the said holes at each end to hold the slide in adjusted position on the gauging-rod.

Signed at New York city, in the county of New York and State of New York this 5th day of July A. D. 1930.

ELVER LARSEN. 

